Recently, researchers attention has been drawn to analyzing the time series of rainfall [1],water level of river [2], temperature, sunshine hours, etc in order to investigate climate parameters [3]. Considerable changes in rainfall or water surface level directly effect on environmental concerns such as drought and flood [4]. Nonetheless, not all the hydrological data or climate data are available in most real issues, because data collection is not often fully carried out in the scientific research. Among the various reasons for the lack of some data can be pointed out to considering unimportant data while entering, being some flaws in the data recording equipment, lack of data entry because it is hard to be understood, incompatibility of the data with other data.